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Finding the Fourth Proportional to 6,751.51, 9,316.37 and 3,919.82

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Solution

The fourth proportional to 6,751.51, 9,316.37 and 3,919.82 is: 5,408.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,751.51 : 9,316.37 = 3,919.82 : x
  2. Step 2: Convert to fraction form
    6,751.51/9,316.37 = 3,919.82/x
  3. Step 3: Cross multiply
    6,751.51x = 9,316.37 × 3,919.82
  4. Step 4: Simplify right side
    6,751.51x = 36,518,456.67
  5. Step 5: Solve for x
    x = 36,518,456.67/6,751.51
  6. Step 6: Final answer
    x = 5,408.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.